Asian-Americans were more likely to experience a severe ischemic stroke and to have a worse outcome compared with white patients, according to preliminary research presented Thursday at the American Stroke Association’s International Stroke Conference.

About half of Asian-Americans and Hispanic-Americans with diabetes don’t know they have it, according to new research. The study, published Tuesday in the Journal of the American Medical Association, also found that half of all U.S. adults have diabetes or prediabetes.